The present invention relates to a novel manufacturing process of pharmaceutically active compound of Formula (I) used as a long-acting anticholinergic bronchodilator. Starting from oxalic acid derivative of Formula (III) the invention describes preparation of a novel cyclic anhydride of Formula (II) which is very efficient precursor in the synthesis of Tiotropium bromide (compound of Formula (I)).
本发明涉及一种用作长效抗
胆碱能支气管扩张剂的药物活性化合物(I)的新型制造工艺。从公式(III)的
草酸衍
生物开始,本发明描述了一种制备新型环状酐(II)的方法,该酐是在合成噻托
溴铵(公式(I)化合物)过程中非常高效的前体。